Adjustable wrench



Patented May 269, 1925A.

1,53ga13f1 l v GEORGEHCE-NBY NELSON, OF BELVEDERE, KANSAS.

i VA13-.1roSTABLE WnENoriQ Application led September 21., 1923. SerialNo. 664,078.'

State of Kansas, have invented a new andV useful Adjustable Wrench, ofwhich the fol-- lowing is a specification.

This invention relates to tools, and more particularly `to a novel formof wrench, 'the primary object of the invention being to provide awrench which may be readily and easily positioned on a nut, and onewherein all possibilities of the wrench moving with respect to its workare eliminated.

Another object of the invention is to provide means for accuratelyadjusting the jaws of the wrench with respect to each other,.

there being provided locking means .associated with the adjusting meansfor holding the adjusting means against movement after an adj usl'menthas been made.

Another important object of the invention is to provide pivoted handlesections which may be readily and easily moved to.

their active pcsitions. s

With the foregoing and other objects in view whic-hwill appear as thedescription proceeds, the invention resides in the coinbination andarrangement of parts and in the details of construction hereinafterdcscribed and claimed, it being understood that changes inthe preciseembodiment of the invention herein disclosed, may be made within thescope of what is claimed, without. departing from the spirit of theinvention.

Referring to the drawing-z Figure l is an elevational view of a wrenchconstructed in accordance with the invention.

Figure 2 is a longitudinal sectional view through the jaws of the wrenchdisclosing the ope-rating handles in their operatingl pf sition.

Figure 3 is a sectional view taken on line 3-3 of Figure 2.

Figure 4 is a sectional View taken on line l--t of Figure 2. l

Referring to the drawing in detail, the device embodies movable jaws 5and 6, which jaws are formed with cut out portions-7 at their ends andextending transversely thereof to provide article grippingsurfaces.

At one end of each movable jaw is a cut out portion extendinglongitudinally thereof, which cut out portions are designed to providean end wrench, should it be desired to use the tool as such.

Formed on the rear wall of each jaw are spaced flanges 8 between whichthe operating handles 9 are pivotally mounted, shafts l() being providedfor supporting the handles 9. is shown the handles 9 are formed with acurved end wall ll and a. relatively straight end wall 12, the curvedwalls allowing the handles to be moved to their inactive positions, orto positions as shown in dotted lines in Figure 2, when the wrench isused in the usual manner. ln order that the handles 9 may be heldl intheir active positions, pins 13 are pro-- vided, which pins connect theflanges El and restrict movement of the handles.`

` The jaws 5 and 6 are provided with threaded openings to receive theadjusting. screws 13 which may be operated to move the jaws 5 and 6 awayfrom each other, to position them on a nut or bolt to be secured Carriedby one of the jaws is a guide pin let that extends through an opening inthcv opposed jaw torelieve the threads of the 4adjusting screw oflateral strain and'at thel same time hold the jaws in direct alinemcntat all tunes.

As shi-wn, these adjusting screws areV formed with groves 14, whichgrooves accommodate the inner ends of the lock screws l5, wherebymovement of the adjusting screws will be prevented, after an adjustmenthas been made. j

From the foregoing it will be obvious that by operating the adjustingscrews 13, the jaws 5 and 6 may be moved with respectto each other tosecurely grip a nut or bolt to be positioned. After the adjustment hasbeen made, the locking screws 15 may be properly positioned to lool; thejaws against movement, thereby insuring against the wrench slipping fromits work while in use.

I claim e ln a wrench, a pair of movable jaws, adjusting screws carriedby the jaws for moving the jaws with respect to each other, flangesspaced apart and formed integral with each jaw, operating handlespivotally supported between the flanges and adapted PATENT oF FICE@ toswing to positions in parallel Vrelation with the jaws, said flangeshaving openings, pins adapted to extend through the openings and adaptedto engage the operating f handles to restrict movement of the operatinghandles, and a guidepin for holding the j aws in alignment with eachother.`

In testimony that I claim the foregoing as my own, I have hereto aixedmy signa-- ture in the presence of two witnesses.

GEORGE HENRY NELSON.

Witnesses:

A. S. LEONHARDT, H. I-I. KEITHLEY.

